ICE in nightly: "Failed to get crate data for crate15" when proc-macro references a dependency in a doc comment #120909
Description
Code
Minimal repro: https://github.com/parasyte/crash-rustc
This ICE needs a specific project setup with a proc-macro that has a doc-comment referencing one of its crate dependencies. The git repo above is a full example, but this will work, too:
Cargo.toml
[package] name = "crash-rustc" version = "0.1.0" edition = "2021" [lib] proc-macro = true [dependencies] base64 = "0.21"lib.rs
//! [`base64`] The error only seems to happen with crates that do not contain hyphens in the name. I don't know, I haven't really dug into it. base64 is a popular crate, it doesn't have any dependencies, and it exhibits the crash. The git repo above has a totally empty dependency named crashy, so it doesn't really matter what the dependency itself contains.
Meta
rustc --version --verbose:
rustc 1.78.0-nightly (6cc484351 2024-02-10) binary: rustc commit-hash: 6cc4843512d613f51ec81aba689180c31b0b28b6 commit-date: 2024-02-10 host: x86_64-pc-windows-msvc release: 1.78.0-nightly LLVM version: 17.0.6 Error output
thread 'rustc' panicked at compiler\rustc_metadata\src\creader.rs:195:32: Failed to get crate data for crate15 stack backtrace: 0: 0x7ff93f662972 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc99197c9b2d6b3ef 1: 0x7ff93f69563d - core::fmt::write::h2264ae2ff10f9d05 2: 0x7ff93f658ff1 - <std::io::IoSliceMut as core::fmt::Debug>::fmt::h32e7988c01068207 3: 0x7ff93f66279a - std::sys_common::backtrace::lock::h4ad46ad9c5ad405f 4: 0x7ff93f665b59 - std::panicking::default_hook::h0ba92da552d0410c 5: 0x7ff93f665815 - std::panicking::default_hook::h0ba92da552d0410c 6: 0x7ff926429b15 - <tracing_subscriber[1a895b7d438f8c1d]::util::TryInitError as core[1a9ca60cf5f5707d]::fmt::Display>::fmt 7: 0x7ff93f666163 - std::panicking::rust_panic_with_hook::haa5b2a955d6e9910 8: 0x7ff93f666009 - <std::panicking::begin_panic_handler::StaticStrPayload as core::panic::PanicPayload>::take_box::h1fc7089d2c1f3293 9: 0x7ff93f663279 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc99197c9b2d6b3ef 10: 0x7ff93f665cd6 - rust_begin_unwind 11: 0x7ff93f6bb737 - core::panicking::panic_fmt::h3b76f05d3256bd9f 12: 0x7ff92516a3db - <rustc_metadata[2f9ed4c92abfca28]::creader::CStore as rustc_session[3bf59b46651f552d]::cstore::CrateStore>::stable_crate_id 13: 0x7ff9262656fd - <rustc_middle[9193cad70d79b3d1]::ty::visit::LateBoundRegionsCollector as rustc_type_ir[fbb395866ffc979a]::visit::TypeVisitor<rustc_middle[9193cad70d79b3d1]::ty::context::TyCtxt>>::visit_ty 14: 0x7ff9252a6b00 - <rustc_middle[9193cad70d79b3d1]::query::on_disk_cache::OnDiskCache>::serialize 15: 0x7ff9252d58a3 - <rustc_middle[9193cad70d79b3d1]::ty::context::TyCtxt>::serialize_query_result_cache 16: 0x7ff925112dda - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 17: 0x7ff925116c73 - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 18: 0x7ff92510ff77 - rustc_incremental[f90b8bd0ccf92d0f]::persist::load::setup_dep_graph 19: 0x7ff925119c52 - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 20: 0x7ff9251105b0 - rustc_incremental[f90b8bd0ccf92d0f]::persist::load::setup_dep_graph 21: 0x7ff925119e0b - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 22: 0x7ff92511175f - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_dep_graph 23: 0x7ff9224601de - rustc_driver_impl[b32f8017ee93a888]::main 24: 0x7ff9224699d1 - rustc_driver_impl[b32f8017ee93a888]::main 25: 0x7ff92245c48d - rustc_driver_impl[b32f8017ee93a888]::main 26: 0x7ff92245def8 - rustc_driver_impl[b32f8017ee93a888]::main 27: 0x7ff92249b74f - rustc_driver_impl[b32f8017ee93a888]::main 28: 0x7ff92249a678 - rustc_driver_impl[b32f8017ee93a888]::main 29: 0x7ff93f676b1c - std::sys::pal::windows::thread::Thread::new::h12285e0320d9cc9c 30: 0x7ff9d256257d - BaseThreadInitThunk 31: 0x7ff9d420aa58 - RtlUserThreadStart error: the compiler unexpectedly panicked. this is a bug. note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md note: please attach the file at `C:\Users\jay\Desktop\crash-rustc\rustc-ice-2024-02-11T02_19_09-221228.txt` to your bug report note: compiler flags: --crate-type proc-macro -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED] note: some of the compiler flags provided by cargo are hidden query stack during panic: end of query stack Backtrace
stack backtrace: 0: 0x7ff93f662972 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc99197c9b2d6b3ef 1: 0x7ff93f69563d - core::fmt::write::h2264ae2ff10f9d05 2: 0x7ff93f658ff1 - <std::io::IoSliceMut as core::fmt::Debug>::fmt::h32e7988c01068207 3: 0x7ff93f66279a - std::sys_common::backtrace::lock::h4ad46ad9c5ad405f 4: 0x7ff93f665b59 - std::panicking::default_hook::h0ba92da552d0410c 5: 0x7ff93f665815 - std::panicking::default_hook::h0ba92da552d0410c 6: 0x7ff926429b15 - <tracing_subscriber[1a895b7d438f8c1d]::util::TryInitError as core[1a9ca60cf5f5707d]::fmt::Display>::fmt 7: 0x7ff93f666163 - std::panicking::rust_panic_with_hook::haa5b2a955d6e9910 8: 0x7ff93f666009 - <std::panicking::begin_panic_handler::StaticStrPayload as core::panic::PanicPayload>::take_box::h1fc7089d2c1f3293 9: 0x7ff93f663279 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc99197c9b2d6b3ef 10: 0x7ff93f665cd6 - rust_begin_unwind 11: 0x7ff93f6bb737 - core::panicking::panic_fmt::h3b76f05d3256bd9f 12: 0x7ff92516a3db - <rustc_metadata[2f9ed4c92abfca28]::creader::CStore as rustc_session[3bf59b46651f552d]::cstore::CrateStore>::stable_crate_id 13: 0x7ff9262656fd - <rustc_middle[9193cad70d79b3d1]::ty::visit::LateBoundRegionsCollector as rustc_type_ir[fbb395866ffc979a]::visit::TypeVisitor<rustc_middle[9193cad70d79b3d1]::ty::context::TyCtxt>>::visit_ty 14: 0x7ff9252a6b00 - <rustc_middle[9193cad70d79b3d1]::query::on_disk_cache::OnDiskCache>::serialize 15: 0x7ff9252d58a3 - <rustc_middle[9193cad70d79b3d1]::ty::context::TyCtxt>::serialize_query_result_cache 16: 0x7ff925112dda - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 17: 0x7ff925116c73 - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 18: 0x7ff92510ff77 - rustc_incremental[f90b8bd0ccf92d0f]::persist::load::setup_dep_graph 19: 0x7ff925119c52 - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 20: 0x7ff9251105b0 - rustc_incremental[f90b8bd0ccf92d0f]::persist::load::setup_dep_graph 21: 0x7ff925119e0b - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_work_product_index 22: 0x7ff92511175f - rustc_incremental[f90b8bd0ccf92d0f]::persist::save::save_dep_graph 23: 0x7ff9224601de - rustc_driver_impl[b32f8017ee93a888]::main 24: 0x7ff9224699d1 - rustc_driver_impl[b32f8017ee93a888]::main 25: 0x7ff92245c48d - rustc_driver_impl[b32f8017ee93a888]::main 26: 0x7ff92245def8 - rustc_driver_impl[b32f8017ee93a888]::main 27: 0x7ff92249b74f - rustc_driver_impl[b32f8017ee93a888]::main 28: 0x7ff92249a678 - rustc_driver_impl[b32f8017ee93a888]::main 29: 0x7ff93f676b1c - std::sys::pal::windows::thread::Thread::new::h12285e0320d9cc9c 30: 0x7ff9d256257d - BaseThreadInitThunk 31: 0x7ff9d420aa58 - RtlUserThreadStart